"Mathematics That Makes You Want to Solve It" Masahiko Sato / Ryo Oshima / Junya Hirose Price: ¥1,800 + tax Stored at home. I have confirmed that there are no folds, stains, or scratches. Please judge the condition based on the photos. Thank you. Book Contents The production members of "PythagoraSwitch" have created a math problem book unlike any other. It's filled with problems that will captivate you at a glance. Whether you're bad at math or good at it, you'll surely be engrossed in the 23 problems expressed with attractive photos and graphics. You can learn how to construct logic and develop the ability to think outside the box. For everyone from junior high school students and up who seek the joy of thinking."